Use of black-plastic, air-duct fitting of VW Part No. 022 119 62

[NASkeet]

Can anyone identify the precise purpose (probably for pre-heated air to an air-filter of some sort!?!) and application of a moulded black-plastic, air-duct fitting of VW Part No. 022 119 623, with a 53 mm external-diameter circular spigot at one end, for probable connection to a 53 mm internal-diameter hose and a 50 mm x 44 mm quasi-rectangular opening (i.e. radiused corners: three of small radius and one of large radius) with perforated quasi-hexagonal attachment flange (two 7 mm diameter holes: centres at 74 mm separation).

It is thought to be for a VW Type 4 style engine; which I suspect originated from a 1971 VW 411LE, with WO-Series fuel-injected engine.

By an interesting "coincidence", the quasi-rectangular opening and quasi-hexagonal attachment flange, perfectly matches the warm-air duct hole in the large full-width coverplate, above the transaxle clutch housing of the 1974 VW 1800 Type 2 engine, installed in my RHD 1973 VW "1600" Type 2 campervan, which leads via a different air-duct fitting, to the air-filter housing, for the twin Solex carburettors.
_________________
Regards.

Nigel A. Skeet

Independent tutor (semi-retired) of mathematics, physics, technology & engineering for secondary, tertiary, further & higher education.

Much modified, RHD 1973 VW "1600" Type 2 Westfalia Continental campervan, with the World's only decent, cross-over-arm, SWF pantograph rear-window wiper

Onetime member, plus former Technical Editor & Editor of Transporter Talk magazine
Volkswagen Type 2 Owners' Club (Great Britain)

http://www.vwt2oc.net

[raygreenwood]

[NASkeet]

Many years ago, I acquired a WO-Series, VW Type 4 style engine with an almost complete Bosch D-Jetronic fuel-injection system, cast-aluminium fan, exhaust manifolds (no sheet-steel shrouds) and early-style exhaust silencer (aka muffler), Bosch 55A alternator and that black-plastic air-duct fitting; all of which are thought to originate from a 1971 VW 411LE Variant (i.e. estate car or station wagon), as indicated by the form of the oil-filler tube, oil-level dipstick and crankcase breather box with PCV valve. For some reason the cooling-fan housing, thermostat and all of the coverplates were missing!

It is this WO-Series engine (WO 140 122) together with modified 1974/75 VW 1800 Type 2 cylinder heads (41 mm inlet & 34 mm exhaust valves) and NPR 96 mm "bore" cylinder barrels & flat-crown pistons, which forms the basis of the substitute VW Type 4 style hybrid air-cooled engine, for my RHD 1973 VW "1600" Type 2 Westfalia Continental campervan.

Item 22 - 022 119 623: which you have ringed with a red circle closely resembles the part that I have, but the picture doesn't make clear that the 53 mm external-diameter (strange size!?!) hose-connection spigot, is angled upward and to the right-hand side of the vehicle, at about 45 degrees to the vertical. I have yet to come across a hose with a 53 mm internal-diameter, so I wonder what actually fitted onto this spigot!?!

Item 28 - 021 119 629 B: Intake air preheating duct for engines, from WO 129 582 upto July 1972, appears to be identical to that of the 1974 VW 1800 Type 2, AP-Series engine that I also acquired

If I can make it work properly, I hope to use the VW 411LE's Bosch D-Jetronic fuel injection system with this WO-Series based engine; possibly using the black-plastic air-duct fitting (VW Part No. 022 119 623) to supply pre-heated air to a custom air-filter housing, which I might be able to mount on the steel platform (shape akin to a circle with a segment removed - cut along a chord), on the right-hand side of the engine compartment, originally used for the VW 1600 Type 1 style engine's remote-mounted oil-bath air cleaner.
_________________
Regards.

Nigel A. Skeet

Independent tutor (semi-retired) of mathematics, physics, technology & engineering for secondary, tertiary, further & higher education.

Much modified, RHD 1973 VW "1600" Type 2 Westfalia Continental campervan, with the World's only decent, cross-over-arm, SWF pantograph rear-window wiper

Onetime member, plus former Technical Editor & Editor of Transporter Talk magazine
Volkswagen Type 2 Owners' Club (Great Britain)

http://www.vwt2oc.net

[raygreenwood]

Item # 28 is what this part commects to.
The #28 part is a connecting snorkel. Its oj the forward side of the firewall metal....has a gasket...part # 36...and the angled 53mm spigot went to a hose that fitted to the air cleaner.

It was not something common here. It would have only appeared on a 1971 model in the US. I have a full set of 1971 sheet metal with that snorkel. I will have to look to see if there is a special connector in it to tee into the air cleaner inlet.

Typically in the later US models.....the inlet to the air cleaner on 411 was a single inlet that went to a short air boot to the inlet funnel for fresh unheated air. There was a vacuum diaphram that cut air on and off in the 411 oil bath air cleaner.

I will have to look in the book and find out whether it was for only the sedan, wagon or both. I am going off of memory but I "think" the 022 prefix at the rigjt end of the line denotes wagon only. Ray

[raygreenwood]

Sorry I did not make the connection earlier for this....

jeez...all I had to do was look at one of my air cleaners and look in the book.

It has been so long since I have used an oil bath air cleaner. I have been using the early 412, round plastic pleated air filter housing.

Here is the book pages:

The 53mm hose is a VW 411/412 only part. Its part 21 in the picture. The elbow is goes onto snaps onto the filter and is a swivel elbow (part #20) with a groove that snaps over a raised ring.

I have the elbow somewhere.

Its odd....the after August of 1972 D-jet (which they only had for a few months)...had an oil bath air cleaner but no heat riser or elbow. The late sheet metal was different. No snorkel riser behind the sheet metal.

Most had the round plastic unit seen at the top of the parts diagram...part #10. This was used for the last of D-jet with no heat riser....and then they went to L-jet on the 1974 model

I think this mainly was a gray market thing here. My 1973 412 two door saloon (a tourist vehicle bought in Germany). It had an oil bath air cleaner...with no sheet metal snorkel....and had a round plastic cap snapped over the hole where the pivoting elbow was that went to the heat riser. Ray

[NASkeet]

I also have the "flexible" ribbed rubber hose (VW Part No. unknown - probably 022 129 967 F), corresponding to Item 24, which would connect the throttle-body to the air cleaner. Sadly it has a split in it and it's doubtful whether it could be repaired.

I have an old copy of the Haynes manual for the VW 411 & 412 (bought for circa £0•80 several years ago, at my local public library’s second-hand book sale), but I cannot recall any pictures or references, pertaining to the air-filter housing or any the components associated with it.

https://www.amazon.co.uk/Volkswagen-1968-75-Worksh...412+manual

https://www.amazon.co.uk/Volkswagen-411-Owners-Wor...412+manual

It’s been a few decades since I last saw a VW 411 or 412 in my part of the World. I think most have succumbed to the demon rust! Back in the 1970s and possibly the early 1980s, I routinely found several VW Type 3 and Type 4 cars in my local general car breakers’ yards, whenever I visited. At that time, I knew little if anything about possible inter-changeability of parts and/or systems, between the various air-cooled VW Types 1, 2, 3 & 4, otherwise I might have made some major upgrades to the RHD 1973 VW "1600" Type 2 Westfalia Continental campervan a lot sooner.

During the early-1990s, I came across a circa 1973 VW 412LE Variant (i.e. station wagon) in a specialist VW breaker’s yard, less than 20 miles from my home, from which I was able to salvage a few more Bosch D-Jetronic fuel injection parts, but sadly I was unable to gain access to the fuel-injection pump (three hose-connection type, which I think was common to the VW 1600LE Type 3.

When the 1974 VW 412 with VW 1800 Type 4 engine was introduced, and the USA changed over to the Bosch L-Jetronic system, the British (and probably European also) specification VW 412, reverted to having twin Solex carburettors, albeit with larger 40 mm venturis. These carburettors have short inlet manifolds, which I think are similar if not identical, to the pair of short inlet manifolds I possess in my swop box, that originated from a British specification 1980~83 VW 2000 Vanagon’s VW Type 4 style air-cooled engine.

I’m not a great fan of oil-bath air cleaners which are messy and reputed to have a relatively low filtration efficiency.
_________________
Regards.

Nigel A. Skeet

Independent tutor (semi-retired) of mathematics, physics, technology & engineering for secondary, tertiary, further & higher education.

Much modified, RHD 1973 VW "1600" Type 2 Westfalia Continental campervan, with the World's only decent, cross-over-arm, SWF pantograph rear-window wiper

Onetime member, plus former Technical Editor & Editor of Transporter Talk magazine
Volkswagen Type 2 Owners' Club (Great Britain)

http://www.vwt2oc.net

[braamn]

Hi there , where can I find the parts manual you used in this post? Is it online anywhere??
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1973 Baja Bug (sold)
1972 2000L Bay Window (sold)
1971 411L Variant

[raygreenwood]

I think an online version link to was just,recently posted. I will dig it up.

I have been meaning to clean mine up and get it to Everrett to post. I may be able to get to that next week or so. Its kind of a low rez version that,was gifted to me on a disc back in about 2005.

Someone in England was nice enough to take pictures...jpegs....of an entire parts book.

So the file is fairly large. What I need to do is open each page as a jpeg and clean them up, brighten them and bring up the contrast. Two sections were duplicated by the person taking the pictures.

So hopefully I csn get this ready to be avaialable soon. Ray

[Pelle]

[braamn]

[braamn]

Thanks Pelle , i'll try my best to figure it out in German, better than nothing !
_________________
1973 Baja Bug (sold)
1972 2000L Bay Window (sold)
1971 411L Variant